3.3.1. Soil Resistivity Test Leads for Soil Box, Set of 4 – Item No. HMA-673 - Set of four color-coded test leads for use with soil resistivity boxes. 3.3.2. Silent Sifter, 115V/60Hz – Item No. SS-21 - Mechanical sieve shaker designed for quiet operation and consistent particle separation. 3.3.3. Vacuum Pump, 1/3-Hp, Oil-less, 1.6 CFM, 115V/60Hz – Item No. MA24 - Oil-less vacuum pump for laboratory use, suitable for specificgravity and filtration testing. 3.3.4. Specific Gravity Bench without Tank – Item No. SG-20 - Steel support bench for specific-gravity testing, designed for use with separate water tank. 3.3.5. Specific Gravity 30-Gallon Water Tank, 18" Deep – Item No. SGA-120 - Water tank used with specific-gravity bench; 30-gallon capacity, 18- inch depth. 3.3.6. Standard Forced-Air Convection Oven, 2.3 cu ft, 120V/50-60Hz – Item No. DOL-24A - Laboratory oven providing uniform drying through forced-air circulation. 3.3.7. Coarse Sieve Cleaning Brush – Item No. TSA-172 - Brush with stiff bristles for cleaning coarse sieves. 3.3.8. Spatula, 4" x 3/4" Stainless-Steel Blade – Item No. HMA-10 - Laboratory spatula with stainless-steel blade and handle.
